公开(公告)号：US20090316697A1

公开(公告)日：2009-12-24

申请号：US12185109

申请日：2008-08-03

Applicant: Karthik Dakshinamoorthy ,  Bhaskar Srinivasan

Inventor： Karthik Dakshinamoorthy ,  Bhaskar Srinivasan

IPC: H04L12/56

CPC classification number: H04L12/1886 ,  H04L47/10

Abstract: Disclosed are, inter alia, methods, apparatus, computer-storage media, mechanisms, and means associated with pre-dropping of a packet if its Time-To-Live (TTL) value is not large enough to reach a destination, such as, but not limited to, its destination if it is a unicast packet, or at least one more destination for a multicast packet. A packet switching device maintains associations between (a) nearest receiving node distances and (b) prefixes or complete addresses. If a packet does not have enough TTL to reach an intended recipient identified by a corresponding nearest receiving node distance, then the packet is dropped even though the TTL has not expired. In this manner, some bandwidth and other network resources are not wasted on traffic that will timeout via the TTL mechanism before reaching a subsequent intended recipient.

Abstract translation: 披露了如果其生存时间（TTL）值不足以到达目的地的方法，装置，计算机存储介质，机制和与丢弃分组相关联的装置，例如， 但不限于，如果它是单播分组，则其目的地，或者至少一个多播分组的目的地。 分组交换设备保持（a）最近的接收节点距离和（b）前缀或完整地址之间的关联。 如果分组没有足够的TTL来达到由对应的最近接收节点距离标识的预期接收者，则即使TTL未过期，分组也被丢弃。 以这种方式，一些带宽和其他网络资源不会浪费在通过TTL机制超时到达后续预期接收者的流量上。

公开(公告)号：US08036220B2

公开(公告)日：2011-10-11

申请号：US12185109

申请日：2008-08-03

Applicant: Karthik Dakshinamoorthy ,  Bhaskar Srinivasan

Inventor： Karthik Dakshinamoorthy ,  Bhaskar Srinivasan

IPC: H04L12/28 ,  H04L12/56 ,  G06F15/173

CPC classification number: H04L12/1886 ,  H04L47/10

Abstract: A packet is pre-dropped if its Time-To-Live (TTL) value is not large enough to reach a destination, such as, but not limited to, its destination if it is a unicast packet, or at least one more destination for a multicast packet. A packet switching device maintains associations between (a) nearest receiving node distances and (b) prefixes or complete addresses. If a packet does not have enough TTL to reach an intended recipient identified by a corresponding nearest receiving node distance, then the packet is dropped even though the TTL has not expired. In this manner, some bandwidth and other network resources are not wasted on traffic that will timeout via the TTL mechanism before reaching a subsequent intended recipient.

Abstract translation: 如果分组的生存时间（TTL）值不够大以达到目的地（例如但不限于其目的地，如果它是单播分组）或至少一个更多的目的地，则分组是预先丢弃的 一个组播数据包。 分组交换设备保持（a）最近的接收节点距离和（b）前缀或完整地址之间的关联。 如果分组没有足够的TTL来达到由对应的最近接收节点距离标识的预期接收者，则即使TTL未过期，分组也被丢弃。 以这种方式，一些带宽和其他网络资源不会浪费在通过TTL机制超时到达后续预期接收者的流量上。

公开(公告)号：US07864785B1

公开(公告)日：2011-01-04

申请号：US10698807

申请日：2003-10-31

Applicant: Aravind Sitaraman ,  Sandesh K. Rao ,  Karthik Dakshinamoorthy

Inventor： Aravind Sitaraman ,  Sandesh K. Rao ,  Karthik Dakshinamoorthy

IPC: H04L12/56

CPC classification number: H04L12/5601

Abstract: A method and apparatus create a bundle of soft permanent virtual circuits (SPVCs) coupling form a source end to a destination end via a communications network. The SPVC bundle includes a plurality of member SPVCs, each member SPVC including a permanent virtual circuit (PVC) and a switched virtual circuit (SVC). The SPVC bundle creation includes (a) creating the SPVC bundle for the source end, each of the member SPVCs being associated with a respective connection characteristic and coupling to the same destination, and (b) transmitting, from the source end to the destination end, an SPVC setup message containing configuration information of the SPVC bundle. The SPVC bundle creation may further includes automatically creating, at the destination end, in response to the SPVC setup message, the SPVC bundle for the destination end in accordance with the configuration information.

Abstract translation: 一种方法和装置通过通信网络创建从源端耦合到目的地端的一束软永久虚拟电路（SPVC）。 SPVC束包括多个成员SPVC，每个成员SPVC包括永久虚拟电路（PVC）和交换虚拟电路（SVC）。 SPVC捆绑包创建包括（a）为源端创建SPVC捆绑包，每个成员SPVC与相应的连接特性相关联并且耦合到相同的目的地，以及（b）从源端到目的地端 ，一个包含SPVC束的配置信息的SPVC建立消息。 SPVC捆绑包创建还可以包括根据配置信息在目的地端自动创建响应于SPVC建立消息的目的地端的SPVC捆绑包。

公开(公告)号：US20080205396A1

公开(公告)日：2008-08-28

申请号：US11732728

申请日：2007-04-04

Applicant: Karthik Dakshinamoorthy ,  Revati Mariappan

Inventor： Karthik Dakshinamoorthy ,  Revati Mariappan

IPC: H04L12/56

CPC classification number: H04L12/1886

Abstract: A switching device (e.g., router, bridge) provides time-based authorization of multicast services. When a message is received to request the delivery of a multicast service or a first message is sent to a multicast group, a subscription policy for the IP multicast subscription service is retrieved. This subscription policy includes one or more limitations which allow the IP multicast subscription service during some predefined time of day/week or duration but prevent the IP multicast subscription service during some predefined time of day/week or duration. The switching device is configured to enforce these time-based authorization of multicast services policies.

Abstract translation: 交换设备（例如，路由器，桥接器）提供多播服务的基于时间的授权。 当接收到请求传送多播服务的消息或者向多播组发送第一消息时，检索用于IP多播订阅服务的订阅策略。 该订阅策略包括在日/周或持续时间的某个预定时间内允许IP组播订阅服务的一个或多个限制，但是在日/周或持续时间的某个预定时间期间阻止IP组播订阅服务。 交换设备被配置为强制实施多播服务策略的这些基于时间的授权。

公开(公告)号：US08259721B2

公开(公告)日：2012-09-04

申请号：US11732728

申请日：2007-04-04

Applicant: Karthik Dakshinamoorthy ,  Revati Mariappan

Inventor： Karthik Dakshinamoorthy ,  Revati Mariappan

IPC: H04L12/56

CPC classification number: H04L12/1886

Abstract: A switching device (e.g., router, bridge) provides time-based authorization of multicast services. When a message is received to request the delivery of a multicast service or a first message is sent to a multicast group, a subscription policy for the IP multicast subscription service is retrieved. This subscription policy includes one or more limitations which allow the IP multicast subscription service during some predefined time of day/week or duration but prevent the IP multicast subscription service during some predefined time of day/week or duration. The switching device is configured to enforce these time-based authorization of multicast services policies.

Abstract translation: 一种开关设备（例如，路由器，桥接器）提供的多播服务的基于时间的授权。 当接收到一个消息，以请求一个多播服务或第一消息的传送被发送到多播组，对IP多播的订阅服务的订阅策略检索。 此订阅策略包括一个或多个限制，允许在天/周或持续时间的某一预定时间的IP多播订阅服务，但防止在天/周或持续时间的某一预定时间的IP多播订阅服务。 切换装置被配置为执行多播服务的策略的这些基于时间的授权。